"Der Böse Föhn" is an installation by artist group Sweeterland. A collection of hanging hairdryers irritate the visitors with sudden bursts of air and noise. The artists showed the installation in Kunsthaus Glarus in 2011. For the neighborhood of Wollishofen, where artfoyer is situated, they adapted the installation so that it is triggered by the movement of the passersby.

"A potential or unknown risks and a trigger are enough to produce a disaster. Even a discussion about the weather is not so innocent anymore. The installation "Der Böse Föhn" plays with sound and movement. They are both unpredictable for the viewers. A slight threat hangs in the air." (Sweeterland 2012)